Invention Grant
- Patent Title: Organic EL device
- Patent Title (中): 有机EL器件
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Application No.: US12922139Application Date: 2009-04-21
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Publication No.: US08497500B2Publication Date: 2013-07-30
- Inventor: Yutaka Terao
- Applicant: Yutaka Terao
- Applicant Address: JP
- Assignee: Sharp Kabushiki Kaisha
- Current Assignee: Sharp Kabushiki Kaisha
- Current Assignee Address: JP
- Agency: Rossi, Kimms & McDowell LLP
- Priority: JP2008-126154 20080513
- International Application: PCT/JP2009/057933 WO 20090421
- International Announcement: WO2009/139275 WO 20091119
- Main IPC: H01L35/24
- IPC: H01L35/24

Abstract:
The object of the present invention is to provide an organic EL device having a structure that resolves a problem of trade-off between decrease in a drive voltage and increase in production yield. The organic EL device of the present invention includes a substrate, a pair of electrodes provided on the substrate, and an organic EL layer sandwiched by the pair of electrodes; the pair of electrodes includes a positive electrode and a negative electrode; the organic EL layer includes at least a light-emitting layer and a hole injection layer that is in contact with the positive electrode; the hole injection layer is formed of an n-type semiconductor host material and a p-type semiconductor guest material; a LUMO level EHIC of the host material and a HOMO level of the guest material or a valence band level EGV satisfy: |EHIC|+0.5 eV≧|EGV|>|EHIC|−0.6 eV.
Public/Granted literature
- US20110140089A1 ORGANIC EL DEVICE Public/Granted day:2011-06-16
Information query
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